Related Rule
Kenya
Practice Relating to Rule 22. The Principle of Precautions against the Effects of Attacks
Kenya’s LOAC Manual (1997) states: “When the tactical situations permits, defence measures which may affect civilian persons shall be announced by effective advance warning.” 
Kenya, Law of Armed Conflict, Military Basic Course (ORS), 4 Précis, The School of Military Police, 1997, Précis No. 4, p. 9.